Tab converted to spaces when using Scanner

[ciscoheat]

{
  System.out.print("> ");
  Scanner newScanner = new Scanner(System.in);
  String s = newScanner.nextLine();
  System.out.print(s).print(", s.length()=").println(s.length())
}

Three tabs between 123 and 456 results in this:

___________________________________________________________
> 123            456
123            456, s.length()=18

[jcoplien]

What is the Java behavior on the same system?

[ciscoheat]

I'm using Java 1.8 on Win 7, and the following program returns string length 9.

import java.util.*;

class HelloWorld
{
    public static void main (String[] args) throws java.lang.Exception
    {
        System.out.print("> ");
        Scanner newScanner = new Scanner(System.in);
        String s = newScanner.nextLine();
        System.out.print(s);
        System.out.print(", s.length()=");
        System.out.println(s.length());
    }
}

> 123                   456
123                     456, s.length()=9